Why is my Vauxhall Zafira Life's heater not working?

I have a 2010 Vauxhall Zafira Life and the heater is not producing any warm air. I have checked the coolant levels and they seem to be fine. What could be causing this issue?

It could be a problem with the heater core. It may be clogged or leaking. You may need to have it checked by a mechanic.

Another possibility is a faulty thermostat. If it is stuck in the closed position, it won't allow hot coolant to circulate and heat up the cabin. Have it replaced if needed.

Have you checked your blower motor? If it's not working, it won't blow any hot air into the cabin. It could be a fuse or a faulty motor that needs to be replaced.

Make sure your air filter is clean. A dirty air filter can restrict air flow and cause the heater to not work properly. Replace it if it's dirty.